{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:F5PQ5IP6ISOR4KNCVSCVIALJVB","short_pith_number":"pith:F5PQ5IP6","schema_version":"1.0","canonical_sha256":"2f5f0ea1fe449d1e29a2ac85540169a84c4214802e4fc6b5eec567e04fc9f8aa","source":{"kind":"arxiv","id":"2606.21330","version":1},"attestation_state":"computed","paper":{"title":"Flow mechanisms governing oscillation in a sonic fluidic oscillator","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Chris J. Nicholls, Louis N. Cattafesta III, Michael R. Fenelon, Yang Zhang","submitted_at":"2026-06-19T11:25:37Z","abstract_excerpt":"Two factors that influence the oscillation mechanism of a sonic fluidic oscillator are investigated: the geometry of the feedback channel connections (control ports) and the influence of flow restrictions in the oscillator outlets. Phase-averaged planar PIV measurements are performed inside the oscillator, synchronised with unsteady pressure measurements, and analysed using space-only proper orthogonal decomposition (POD). The POD analysis reveals two coupled modes: a Sweeping Mode capturing lateral jet displacement and a Bending Mode capturing jet curvature during switching, the latter being "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2606.21330","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2026-06-19T11:25:37Z","cross_cats_sorted":[],"title_canon_sha256":"54f72c0a33c0a566d71d7d9531b1537180cdfde6ba04b8a9a7ba731b2bded5be","abstract_canon_sha256":"1a18bbd21b5def90f63bbcbcabb2b7171c00c0b5ffede1f2ca0807910c4a7679"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-23T01:12:37.438683Z","signature_b64":"c0surF2O6n7mT9118ysOAPCV6n8RUdJ+tzAWG4g1cWtMnfAtPjToWbqj1+eiPidcJa/2wh1TqSmorX3N5FEyAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2f5f0ea1fe449d1e29a2ac85540169a84c4214802e4fc6b5eec567e04fc9f8aa","last_reissued_at":"2026-06-23T01:12:37.438225Z","signature_status":"signed_v1","first_computed_at":"2026-06-23T01:12:37.438225Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Flow mechanisms governing oscillation in a sonic fluidic oscillator","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Chris J. Nicholls, Louis N. Cattafesta III, Michael R. Fenelon, Yang Zhang","submitted_at":"2026-06-19T11:25:37Z","abstract_excerpt":"Two factors that influence the oscillation mechanism of a sonic fluidic oscillator are investigated: the geometry of the feedback channel connections (control ports) and the influence of flow restrictions in the oscillator outlets. Phase-averaged planar PIV measurements are performed inside the oscillator, synchronised with unsteady pressure measurements, and analysed using space-only proper orthogonal decomposition (POD). The POD analysis reveals two coupled modes: a Sweeping Mode capturing lateral jet displacement and a Bending Mode capturing jet curvature during switching, the latter being "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.21330","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.21330/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2606.21330","created_at":"2026-06-23T01:12:37.438298+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.21330v1","created_at":"2026-06-23T01:12:37.438298+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.21330","created_at":"2026-06-23T01:12:37.438298+00:00"},{"alias_kind":"pith_short_12","alias_value":"F5PQ5IP6ISOR","created_at":"2026-06-23T01:12:37.438298+00:00"},{"alias_kind":"pith_short_16","alias_value":"F5PQ5IP6ISOR4KNC","created_at":"2026-06-23T01:12:37.438298+00:00"},{"alias_kind":"pith_short_8","alias_value":"F5PQ5IP6","created_at":"2026-06-23T01:12:37.438298+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/F5PQ5IP6ISOR4KNCVSCVIALJVB","json":"https://pith.science/pith/F5PQ5IP6ISOR4KNCVSCVIALJVB.json","graph_json":"https://pith.science/api/pith-number/F5PQ5IP6ISOR4KNCVSCVIALJVB/graph.json","events_json":"https://pith.science/api/pith-number/F5PQ5IP6ISOR4KNCVSCVIALJVB/events.json","paper":"https://pith.science/paper/F5PQ5IP6"},"agent_actions":{"view_html":"https://pith.science/pith/F5PQ5IP6ISOR4KNCVSCVIALJVB","download_json":"https://pith.science/pith/F5PQ5IP6ISOR4KNCVSCVIALJVB.json","view_paper":"https://pith.science/paper/F5PQ5IP6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.21330&json=true","fetch_graph":"https://pith.science/api/pith-number/F5PQ5IP6ISOR4KNCVSCVIALJVB/graph.json","fetch_events":"https://pith.science/api/pith-number/F5PQ5IP6ISOR4KNCVSCVIALJVB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/F5PQ5IP6ISOR4KNCVSCVIALJVB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/F5PQ5IP6ISOR4KNCVSCVIALJVB/action/storage_attestation","attest_author":"https://pith.science/pith/F5PQ5IP6ISOR4KNCVSCVIALJVB/action/author_attestation","sign_citation":"https://pith.science/pith/F5PQ5IP6ISOR4KNCVSCVIALJVB/action/citation_signature","submit_replication":"https://pith.science/pith/F5PQ5IP6ISOR4KNCVSCVIALJVB/action/replication_record"}},"created_at":"2026-06-23T01:12:37.438298+00:00","updated_at":"2026-06-23T01:12:37.438298+00:00"}